Door latch



YPatented June 3, 193i) Y I i f! I* i* Y f enormen srinis, or' confusGHRIsTI, TEXAs l Y nooit LATCH Y ,application area July i4, 1928,.serial Np. 292,745.

' This invention lrelates t'odoor lat-'ches land nary hook bar with theeXception of the fact 10 door or any similar means.

more particularly to a latch o'tha't type that'therbill 11 ofthehookisprovided with wherein a swinging bai' -is engaged an eye a longitudinalprolongation 12 of the hook to secure a' closure; v l bar, allrportionsof which lare downwardly f5 An important object of the invention is tooffset -withrelation to the hook bar. 50 produce in a device ofthis'ch'aracter a struc- The' terminal Vportion of this prolongationture such that the bar may be iirinlylocked is preferably turnedupwardly, as indicated in the eye toprevent'displacement thereof. at n qy by an article inserted through a crack in the In combination with ahook of this char- A further and morespecic object of the M aneye'having a substantially L-shaped invention is to provide in aconstruction of opening, one branch 15 of this opening subthischaracter'an eyeformed with a branchstantially aligning with the latchhook 10 in ing slot, in' one branch of which the end of one position'ofthis hook and the other branch. l 15 the bar may be engaged in theordinary man- 16 extending at right angles to the branch 15 60 ner, thebar beingfmovable, after itsfengage-l and being arranged inthe arc ofswing 'of the ment into a second branch of the slot from bill 1101:' thehook. The wall `16.a oi' the which it may not be disengaged-except bybranchv 16 which is remote from the pivot P f movement to thefirst namedbranclrf of the hook bar ijs spaced from this pivot a disl0 yAstillfurther object ofthe invention is to tance greater thankthe distancevfrom the piv- 6 5,

provide in a structure of this character. means ot to the bill 11 and adistance less thany the for locking the bar in the second-branch' ofdistance from the pivoty of the hook to the the slot, 1 'l I terminal 13of theprolongation. It will be These and other objects I attain by theobvious that the hook may be engaged in the ..25 construction Vshown iny the accompanying eye at'the branch 15 of the slot but that if it 70 *Ydrawing, Vwherein for jthe purpose ofl illusis subsequently moved tothe'branch 16 theretration is shown a preferredembodiment of of,`1t maynot be removedby a vertical swingmy invention andl wherein ing movement,:for thereason that the ter- -Figure 1 1s a plan View ofa door latchconminal portion 13 will underlie the far edge# 30 structed in accordance'withV my invention, wall laof the branch 16 and prevent such 7.5,. I

parts being shown in solid lines in the lockedV verticalswinging'rmovement. It must; theref position and in dotted lines in theposition in lfore, be 4returned to the branch 1 5 beforerit which thelatch bar may be disengaged; maybe disengaged'. 'n f Figure l2' is-asection on vthe lin/e222v of `Upon the shorterwall 17 `ofthe branchfl1.3.5 Figure 1; ofthe slot,-I-providega-v bearing 18 which is" 89 .49leferring now Amore' piarti'cularlylto the operatinghead 20'.VV

Figure 8 is a 'section' on the line 'E5-Soif directed transverselyof thebranch slotl and Figure 1; l`- v f f aligns with-the innen endthereof'.v `In this'y Figure Ai afsec'tionv Lonthe line ofv bearingV islslidably an'd'rotatablymounted -a bolt 19;,Aonefend o'fwhich isprovided with an drawingsfi-he^numeral10 indicates fahoo'k `'Theopposite endof thisv bolt has 4a'fhool; f

bar pivoted; atfP tol l`one or two relatively 21. This bolt maybeshifted overthe branch movable members Mv and M which may con- 16 oftheslot and 'rotatedto oppose thehook stitute la door and door frame Thehook bar 21 to theouterorlongerwall of this slot. l By 10xcorresponds inall particulars tothe ordith'enwit'hdrawing the fbolt,v thehookengages99 acter, I secure to the other of the members M; 55

over this wall and the bolt forms a stop, preventing movement of the barwhich will per mit alignment of its hook 11 with the branch 15 of theslot. This bolt forms a keeper which is practically unwithdrawable bymanipulation of any element which may be inserted through a crack in thedoor.

Since the construction hereinbefore set forth is capable of acertainrange of change and modication without materially departing from thespirit of the invention, I do not limit myself. to such specificstructure except as hereinafter claimed.

I claim v 1. In combination, a pivoted hook bar and eye for engagementwith thehookl barhaving a slot provided with two branches, said hook barwhen engaged with one branch of the slot of the eye being disengageabletherefrom by oscillation in its general plane of swing andv when engagedin the secondbranch thereof having coaction with the eye preventing suchdisengagement, the hook bar being transversely oscillatable to shift thesame from oneto the. other of said branches of the slot', and means uponthe eye positionable to preventsliifting of the hook bar from one t0thev other of the b-ranches of the slot.

`2. Means for securing relatively movable members against movement withrelation to one another including a hook bar pivoted to one of therelatively movable membersV and= having a substantially U-shaped forwardend providing a prolongation of the bar which is oifset inthe generalplane of the bar, an eye secured to the other of the members and havinga substantially Lshaped slot one branch of which is substantiallyradially aligned with the pivot of the hook, the other; branch of theslot having'V the wall thereof which is remote from the pivot of thehook spaced from such pivot a distance less than the combined lengthofthe hook bar and-its extension and the opposite wall thereof spacedfrom -the pivot a distance less than the length of the hook bar from thepivot to the bill.

3.(Meansfor securing' relatively'movable members against move-ment withrelation to oneanother including a hoolr bar pivoted to one of therelatively movable members andl having an extension upon the terminal ofthe billthereof provi-ding a prolongation of the bar which is offset inthe general plane of the bar, an eve secured tothe other ofthe membersand having a substantially l'.shaped slotcnebran-ch of'which issubstantially radially aligned with the pivot of the hook, the otherbranch of the slotJV having the wall Vthereof which is remote.. from.the pivot of the hook spaced from such pivot aVVV distance less-than thecombined length of the hook bai-wand its extension and the opposite wallthereof spaced from the pivot a distance less than the lengthof thelvhook bar' fromfthe 'pivot to the vbill and a longitudinally shift# ablebolt for cutting off communication between the branches of the slot.

4. Means for securing relatively movable' members against movement withrelation to one another including a hook bar pivoted to one of therelatively movable members and having a substantially U-shaped forwardend providing a prolongation of the bar which is offset in the generalplane of the bar, an eye secured to the other of the members and havinga substantially Leshaped slot one branch ofwhich is substantiallyradially aligned with the pivot: ofthe hook, the, other branchvof theslot having the wall thereof which is remote from the pivot of the hookspaced-froml suclipivot a distance less than the combined length of thehook bar and its extension and the opposite wall thereof spaced from thepivot a distance less than the length ofthe hook bar from the pivot toVthe bill, the terminaliof the prolongation'being upturned whereby said,terminal and the bill ofthe hookcombine tol-produce a hook forengagement with the firstv named wallof the slot.. r

5. Means for securing relatively movable members against movementwithrelation to one another including ahook-bar pivoted to one of therelatively movable; members and having a substantially Ui-shapedforwardend providing a, prolongation of the bar which is-offset inthergeneral` plane of the bar-,an eye secured' tothe other ofthermembers and having a. substantially L-shaped slotone branch of whichis substantially radiallyalignedfwith the pivot-- of the hoolnthe otherbranch'. of thesloty having the wall thereof which is remote from thepivotrof the hook spaced fromsuch-p-ivotr. a distance. less than the.combined length of the hook` barand' its extension and' i the oppositewall thereof spaced from. the pivot av distanceless--than the length ofthe hook bar from the pivot to the bill, the terminal of theprolongation bein-g upturned whereby' said termin-alan-dthe bill of theyhookl com-bine to produce a-hook for engagemeI-i-t with the first namedwallof the slot, and meansv for interrupting communication between-thebranchesofy the sl'ot.

6; Means for securing relatively movable members against; movement withl relation to one another including a hook barr-pivoted to one of therelatively movable members and having' any extension. upony the terminalof the bill thereof providing a prolongationzof tliebar-wvhich isosetfin the general plane of the bar, an eye secured to the otherof themembers having a substantially Lfshaped slot one branch of which issubstantially radially-aligned with the pivotl of the hook, the otherbranch of the: slotv having the wall thereof- VVwhich is` remote fromthef pivot of the hookspaced from. such pivot distance less thanthecombined length-fof. the hookbar7 andxits exten-sion and.the-oppositewall thereof spaced from the pivot a distance less than thelength of the hook bar from the pivot tothe bill, and a bolt shiftabletransversely of the inner end of the last named branch of the slot toprevent disengagement of the hook bar therefrom, said bolt having at itsend a hook engageable with the outer v Wall of the last named Wall ofthe last named slot, said bolt being mounted for rotation whereby toshift said hook out of or into alignmentv with said wall.

In testimony whereof I hereunto alx my signature.

GEORGE SFIRIS.

